Some uses of maps have remained relatively unchanged through the ages. We still use them to find out where we are and how to get somewhere else. Governments still use them to say "this is mine, that is yours". But as our planet has now been pretty comprehensively mapped, we don't use them to say "I got here first" that much anymore.

Which makes maps that prove that someone really did get there first extremely coveted and extremely valuable in about equal measures. The combination of value, national pride and good old human greed also makes early maps a fertile breeding ground for trickery and fakery.

The discovery of the fourth continent, after Europe, Asia and Africa, seems to have had more than its fair share of controversy.

Popular opinion holds that Cristoforo Columbo, better known as the anglicised Christopher Columbus, got to America first in 1492. Of course first is a loaded term; Columbus may have been the first European to set foot in the Americas but he certainly wasn't the first human on the continent. But did Columbus get there first?

Probably not; there's now growing evidence that a Norse expedition, led by Leif Ericson, landed on what is now Newfoundland in the 11th Century after being blown off course by a storm when travelling from Norway to Greenland. According to the Book of Icelanders, compiled around 1122 by Ari The Wise, Ericson first landed on a rocky and desolute place he named Helluland or Flat Rock Land, which may have been Baffin Island and then sailed for a further two days before landing again in a place he named Vinland, often mistranslated literally as Wineland but more likely to mean Land with Great Grass Fields.

Of course it would help if there was a map of Vinland, to underscore the I got there first point.

Governments and authorities like maps. They're a useful way of clearly saying this is mine, that is yours. They're also useful for saying where you can and more importantly, where you can't go. This is all too evident in a surprising map of where Russian visitors to the US were permitted to visit during the 1950s.

In the mid 1950s America and Russia were in the middle of the game of oneupmanship, with added nuclear weapons, that was the Cold War. Despite the uneasy detente between the two countries, if you were one of an elite group of Soviet citizens you were actually able to visit the United States. But not all of it. Large swathes of the US were closed to prospective Soviet tourists.

There's a saying that travel broadens the mind. It's a cliche but cliches generally come about because they're true. This week my mind has been considerably broadened, visting the Tandale slum on the outskirts of Dar es Salaam and attending and judging the Sanitation Hackathon, but more about that in a later post.

The week started in Chicago, the Windy City, which lived up to its name, being cold, windy and with crystal clear skies. It's a classic example of the American style of high rise architecture and the view from one of the meeting rooms in Nokia's offices were spectacular.

Although I fly a lot these days, I don't fly on internal routes in the US that much and so flying Virgin America, which has onboard wifi, is still something that brings out the childish geek in me. In homage to a certain Mr. Aaron Cope, once again I am in the sky as I write this and starting to think that maybe I will only write blog posts from airplanes from now on.

While sitting in a hotel room about a week or so back, I realised that while vicchi.org has been the home of my blog for years and the current incarnation may have 267 pieces of bloggage tucked away in the bowels of WordPress (that's 268 with this post), the theme has been pretty much static since sometime in 2007. The same goes for my other web presence over at garygale.com.

But back to this blog for a moment. Like a lot of people I started out with a stock WordPress install and theme. Then I went through the discovery of the WordPress theme repository, installing and uninstalling too many plugins, before finally becoming confident enough to start hacking the PHP and CSS of an existing theme into something vaguely approaching what I wanted. And thereby hangs the problem. My theme, which started out as Chandra Maharzan's rather wonderful Cleanr, suffered from the problem that each time the theme was updated I needed to go through the changes and manually apply them to my hacked version. Scalable and fun this is not.